| Portimao to Camas (Washington) | 5,399.26 mi (8,689.28 km) |
| Portimao to Cambridge (Maryland) | 3,599.05 mi (5,792.12 km) |
| Portimao to Cambridge (Massachusetts) | 3,268.41 mi (5,260.00 km) |
| Portimao to Camden (Arkansas) | 4,590.67 mi (7,387.97 km) |
| Portimao to Camden (New Jersey) | 3,517.17 mi (5,660.35 km) |
| Portimao to Cameron Park (California) | 5,663.97 mi (9,115.28 km) |
| Portimao to Camp Pendleton South (California) | 5,760.65 mi (9,270.87 km) |
| Portimao to Camp Springs (Maryland) | 3,635.11 mi (5,850.14 km) |
| Portimao to Camp Verde (Arizona) | 5,456.24 mi (8,780.96 km) |
| Portimao to Campbell (California) | 5,767.68 mi (9,282.19 km) |
| Portimao to Campbellsville (Kentucky) | 4,096.02 mi (6,591.91 km) |
| Portimao to Campton Hills (Illinois) | 4,109.98 mi (6,614.38 km) |
| Portimao to Canby (Oregon) | 5,424.00 mi (8,729.08 km) |
| Portimao to Candelaria (Puerto Rico) | 3,695.45 mi (5,947.26 km) |
| Portimao to Candler-McAfee (Georgia) | 4,152.04 mi (6,682.06 km) |
